In order to have field with your Last Updated Date you should follow the next:
- Open Admin Panel --> Manage Form View
- Add new field called LastUpdatedDate (Type Date)
- Open Admin Panel --> Manage Group
- Add Read Permission to groups that you want to have this field
- Open Admin Panel --> Manage Rules (Rules Type = Global Rule)
- Add Rule
· Rule Type = SetValue
· Field Name = LastUpdatedDate
· Value = {Date}